If they do not work on the Ursa Mini, not going to work on the Pro, same lens control system.The issue is Tamron will not provide testing samples to BM to see what the issue is. BM is following Canon EF specifications, which work with most EF lenses, Tamron is one of the the exception, along with a few older Canon EF lenses. So the issue is with Tamron, no BM, and expecting BM to burn the testing samples for a minor market share lens is not realistic.

I do not know, I do not use Chinese knock off products, nor do I use the Canin EF mount, or anything Canon/Tamron. I only know what BM said in another post on this same subject, that Tamron uses a different protocol setting, and they (Tamron) will not supply BM with any testing lenses to work this out from. The EF standards are very "loose" with several protocol versions out there and various copies, and not all copies get it right.

Yes Brad, it is very confusing-- another reason to avoid anything EF in my book. Canon makes some nice glass, have used their B4 ENG lenses, but I think the EF mount is best left on the still cameras it was designed for. The new Canon Locking EF mount, might solve some of the issues, but I am sticking with manual PL mount lenses, which Canon also makes, and I would consider using. Cheers

The 15-30 f2.8, 24-70mm f2.8 and the 70-200mm f2.8We were able to get access to these from Tamron.

This functionality will also come across to the URSA Mini EF cameras next time we do a major software update but it does require firmware so might not be in the next release. We are yet to be able to access the primes from Tamron and will add this functionality in a software update when we are able to get them and test them.

All of this takes time and effort at our end and is not as straight forward as you are making out.We currently support a huge range of EF, B4 and PL lenses with URSA Mini and are building on this list all the time.

Most of the time lens manufacturers do not provide us with the information to get their lenses working... we have to do it ourselves. This is the case with the Tamrons and these things take time and resources to get them working.

The lens update will come across to the Mini 4.6K in the next release.

Both the g2 zooms have impressed me for many reasons. Other than anamorphics I would be hard pressed to want to use any cine lenses over these. Just pop one of those nifty Zeiss lens gear on them and a wireless follow focus and they are ready to roll.

Not necessarily different firmware. Are you rerferring the BM Production 4K Camera or the BM Studio 4K Cameras with MFT lens mount. If the later, than the difference is also EF Mount vs MFT mount via adapters, and the adapter could be causing issues.Cheers

Denny Smith wrote:Not necessarily different firmware. Are you rerferring the BM Production 4K Camera or the BM Studio 4K Cameras with MFT lens mount. If the later, than the difference is also EF Mount vs MFT mount via adapters, and the adapter could be causing issues.Cheers

Yeah the BM Studio 4k Camera

Actually I think I have moved on to the Panasonic Lumix G X series. They have power zoom via lanc control which is what I need

The other option is the Olympus M.Zuiko 40-150mm f.28 lens but I can't figure out if it has power zoom over lanc, some other lenses in its family do

No, the 40-150 is not a power zoom, it has a manually controlled zoom. That said you could add a follow focus gear to the zoom ring and use one of Kim’s Servo Zoom controllers to get a power zoom, but it will not be via Lanc. This lens was designed for sports and wildlife photography.

The only Oly power zooms are the Olympus M. Zuiko Digital ED 12-50mm f/3.5-6.3 EZ, and the 14-42 EZ pancake Zoom. All of Oly’s power zoom lenses have the “EZ” in their name. Panny uses PZ designation for their lower zooms.

That said, all of these are still camera zooms, and will not hold focus (parfocal) very well, if at all during a zoom change. The only MFT zooms I have seen that are parfocal are the Oly Four Thirds 14-35 f/2.0 Zoom (which requires a MFT adapter), an excellent lens with real manual focus option, focus is controlled by Lanc in auto focus mode.

The other is the new Panny Lecia 12-60 Zoom, a very nice lens, setup for still and videomwork, it also is parfocal, has very quiet focus and Iris control motors, Iris is cine style smooth changes, no stepping between f/stop EV values, and auto focus is very fast, even on BM cameras, I tested it on the Micro Studio Camera.

If you need a true, remote controlled Servo Zoom with a long reach, you need to use the new Broadcast camera with a B4 Servo Zoom lens. You can adapt one to the Studio Camera, but this is going to cost almost as much as the Broadcast Camera. You will need an optically corrected B4/MFT adapter (MTF and AbelCine make one, costmis around $1500, a power adapter cable and controller for the zoom/Iris (another $1500).Cheers

The Studio Camera does have a fold out LCD monitor on the side. You can also use any SDI Monitor, like the SmallHD 502 or 700series, you do not need to buy the $1500 BM Studio viewfinder Monitor or EVF for recording indoor events/Services.

Yes the Stuido HD and Studio 4Kwere designed for small Studio applications, like a Cable TV studios, school TV programs, or their event coverage in the normal 10-20 foot range. The MFT mount on them may not have been the best choice, but it does allow the use of MFT zooms, and by using the MFT/PL adapter, the more expensive Cine Zooms, some of which have a zoom Servo.Cheers